1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 //_________________________________________________________________________
17 //Basic Memory Leak utility.
18 // You can use this tiny class to *see* if your program is leaking.
20 // AliMemoryWatcher memwatcher;
21 // some program loop on events here {
22 // if ( nevents % x == 0 )
24 // // take a sample every x events
25 // memwatcher.watch(nevents);
28 // TFile f("out.root","RECREATE");
29 // memwatcher.write();
31 // In the output root file you'll get 3 graphs representing
32 // the evolAliPHOSon, as a function of the number of events, of :
33 // - VSIZE is the virtual size (in KBytes) of your program, that is sort of
34 // the total memory used
35 // - RSSIZE is the resident size (in KBytes), that is, the part of your
36 // program which is really in physical memory.
37 // - TIME is an estimate of time per event (really it's the time elasped
38 // between two calls to watch method)
39 // WARNING: this is far from a bulletproof memory report (it's basically
40 // using UNIX command ps -h -p [PID] -o vsize,rssize to do its job).
41 // It has only been tested on Linux so far.
42 // But by fitting the VSIZE by a pol1 under ROOT, you'll see right away
43 // by how much your program is leaking.
44 //*-- Author: Laurent Aphecetche(SUBATECH)
48 // --- AliRoot header files ---
49 #include "AliMemoryWatcher.h"
50 // --- ROOT system ---
54 #include "TStopwatch.h"
56 ClassImp(AliMemoryWatcher)
58 //_____________________________________________________________________________
59 AliMemoryWatcher::AliMemoryWatcher(UInt_t maxsize)
64 fPID = gSystem->GetPid();
65 sprintf(fCmd,"ps -h -p %d -o vsize,rssize",fPID);
66 fX = new Int_t[fMAXSIZE];
67 fVSIZE = new Int_t[fMAXSIZE];
68 fRSSIZE = new Int_t[fMAXSIZE];
69 fTIME = new Double_t[fMAXSIZE];
74 //_____________________________________________________________________________
75 AliMemoryWatcher::AliMemoryWatcher(const AliMemoryWatcher& mw):
79 fMAXSIZE = mw.fMAXSIZE ;
80 fUseMallinfo = mw.fUseMallinfo;
82 strcpy(fCmd, mw.fCmd) ;
83 fX = new Int_t[fMAXSIZE];
84 fVSIZE = new Int_t[fMAXSIZE];
85 fRSSIZE = new Int_t[fMAXSIZE];
86 fTIME = new Double_t[fMAXSIZE];
91 //_____________________________________________________________________________
92 AliMemoryWatcher::~AliMemoryWatcher()
101 //_____________________________________________________________________________
102 void AliMemoryWatcher::Watch(Int_t x)
104 // Sets the point where CPU parameters have to be monitored
105 if ( !fDisabled && fSize < fMAXSIZE ) {
108 fTimer = new TStopwatch;
112 if ( fUseMallinfo ) {
113 static struct mallinfo meminfo;
114 meminfo = mallinfo();
116 fVSIZE[fSize] = (meminfo.hblkhd + meminfo.uordblks) / 1024;
117 fRSSIZE[fSize] = meminfo.uordblks / 1024;
118 fTIME[fSize] = fTimer->CpuTime();
121 static Int_t vsize, rssize;
122 static FILE* pipe = 0;
123 pipe = popen(fCmd,"r");
126 fscanf(pipe,"%d %d",&vsize,&rssize);
129 fVSIZE[fSize] = vsize ;
130 fRSSIZE[fSize] = rssize ;
131 fTIME[fSize] = fTimer->CpuTime();
134 assert(pclose(pipe)!=-1);
140 Error("watch", "I'm full !" ) ;
143 //_____________________________________________________________________________
145 AliMemoryWatcher::GraphVSIZE(void)
147 // Fills the graph with the virtual memory sized used
151 g = new TGraph(Size());
153 for (i=0; i < g->GetN(); i++ ) {
154 g->SetPoint(i,X(i),VSIZE(i));
159 //_____________________________________________________________________________
161 AliMemoryWatcher::GraphRSSIZE(void)
163 // Fills the graph with the real memory sized used
167 g = new TGraph(Size());
169 for (i=0; i < g->GetN(); i++ ) {
170 g->SetPoint(i,X(i),RSSIZE(i));
175 //_____________________________________________________________________________
177 AliMemoryWatcher::GraphTIME(void)
179 // Fills the raph with the used CPU time
183 g = new TGraph(Size());
185 for (i=0; i < g->GetN(); i++ ) {
186 g->SetPoint(i,X(i),TIME(i));
191 //_____________________________________________________________________________
193 AliMemoryWatcher::Frame(void) const
195 //creates the frame histo in which the graphs will be plotted
201 for (i=0; i < Size() ; i++ ) {
202 if ( X(i) < xmin ) xmin = X(i);
203 if ( X(i) > xmax ) xmax = X(i);
204 Double_t y = VSIZE(i)+RSSIZE(i);
205 if ( y > ymax ) ymax = y;
206 if ( VSIZE(i) < ymin ) ymin = VSIZE(i);
207 if ( RSSIZE(i) < ymin ) ymin = RSSIZE(i);
209 TH2F* h = new TH2F("frame","",10,xmin,xmax,10,ymin*0.8,ymax*1.2);
212 //_____________________________________________________________________________
214 AliMemoryWatcher::Write(const char *, Int_t, Int_t)
216 // Stores the graphs in a file
217 if ( GraphVSIZE() ) GraphVSIZE()->Write("VSIZE",TObject::kOverwrite);
218 if ( GraphRSSIZE() ) GraphRSSIZE() ->Write("RSSIZE",TObject::kOverwrite);
219 if ( GraphTIME() ) GraphTIME()->Write("TIME",TObject::kOverwrite);